Improvement in elastic rolls



@initrd States parte epm.

JAMES B. FORSYTH AND JOHN J. HALEY, OF BOSTON, MASSACHUSETTS.

Leum Para; Noi 102,104., dma Apn'uo, 1870.

IMPROVEMENT IN BLASTIC ROLLS.

Ona-

To all whom it may concern Be it known that we, lJAMES B. Fousrrn and JOHN J. HALEY, bot-h of Boston, in the county of Su'olk and State of Massachusetts, have jointly invented an Improvement in the Manufacture of Elastic Rolls; and we do hereby declare that the following, taken in connection with the drawings which accompany and form part of' this specification, is a description of our invention sufficient to enable those skilled in the art to practice it.

In elastic rolls used in .wringing-machines, and for similar purposes, where such rolls have been formed with arbors covered by rubber or rubber compounds, great ditlieulty has been experienced in keeping the .covering from turning upon the arbor, or the arbor from turning in the covering, and many devices have .been employed to e'ectually unite the arbor and cov ering. l

Our invention relates to 'a manner of constructing rolls having rigid mandrels or arbors covered with elastic rubber or rubber compounds, so that the said parts shall be so effectually united that relative turning motion between said parts is rendered impossible without absolutely tearing asunder the yielding part of the roll.

NVe practice our invention as follows:

The arbor being prepared, we take strong cloth, like duck, and cover and saturate it with a viscid, unvulcanized,vnleanizable rubber compound, nud wind this tightly around the arbor until it is covered with a. suiiicient thickness. Then, through the rubber and cloth,and through the arborin holes previously made,

Vwe drive fastenings ol' metal of any convenient form,A

and secure the ends of said fastenings by turning, clinching, op rivetingr them upon the welding on the arbor.

These fastenings heilig applied in suflicient numbers, more cloth, prepared with a similar compound, is tightly wound over the wolds secured by the metal fastenings, or unvulcaiiized, vuleaniznble rubber or rubber compound, without cloth, and in sheets, is welded over the rubber cloth and fastenings, er a tube of vulcanizable unvulcanized rubber or rubber- .coinpound is'lstretched over the material already fastened to `the arbor, and then the arbor and the material upon it are submitted, in the usual way and bythe usual'nicaus, to heat, and all the rubber and rubber compounds on the arbor are vulcanized and united together, so that the tastenings which pass through the arbor, and have their ends in the rubber or rubber compound, hold the'arbor and the elast-ic covering thereof rmly together'.

The drawings sho our improved manufacture in various slight modifications, the figures being elevations of our improved rolls, in wlmch the `elastic material at one end of each roll is represented as removed to exhibit the construction.

In Figure 1, a. is the arbor between flanges b, on which the irst rubber-coated wolfls of cloth are wound, and are marked c.

Through the said wolds metal staples d are passed,

going through suitable holes drilled in the arbor, and when the uniting-bar ofthe two prongs of each staple is brought down upon and imbedded in the wolded material, then the ends of the stapleprongs are bent closely down upon and into the welded material on the jother side.

Outside oi' the fnstenings more rubber-covered cloth, c, is tightly wound, and upon that; is wound a strip of sheet-rubber or rubber compound, or a tube of rubber or rubber compound is stretched over the material e, and then the roll is submitted to heat, and is vuieanizec in the well-known way. l

ln Figure 2 there is no second wolding of rubbercloth outside of the tastenings f, whichare incre pieces of' wire with the ends bent in opposite directions` down upon and imbedded into the welding.

Figure 3 is like lig. 2 in all respects except that the ends ofthe wire iiistcnngs g are bent in the saine di rection.

'.lhc only diilerence between Figure 4 and figs. 3 and 2 is in the metal tastenings i, in which the wire passing through the arbor has one broad long head, and is riveted on the other side, into a similar head, or both ends of the wire 'i nia-y be rivet-ed into heads.

All of the rubber or rubber compound described is nnvulcanized when placed upon the roll, but is so4 mixed and prepared as te be vulcanizable 'when treated at a suilicienlly high temperature, and, when applied to the arbor, is preferably in a riseid or pasty condition.

` Instead of passing the fastcnings entirely through the arbor and through both opposite sides of the welding c, the entering ends of the fastenings may terminate in the arbor instead of passing through it and through'the woldings on both sides of the arbor, but we prefer to have the fastenings pass entirely through both sides of the welding c, and through the arbor.

An elastic roll, in which the metal mandrel or arbor, being first coated with duck or other strong cleth saturated with rubber, and extending around but not through the arbor, such coat is fastened to the arbor by staples, pins, or rivets, the rubber sheet or sheets heilig then vulcanized upon the roll and t-o the coating, as described. Y

' JAMES B. FORSYTH. Witnesses: JOHN J. HALEY.

Fnsncis Gouin),

J. B. Onosr. 

